**TI83** Program file dated 05/06/98, 11:31ÿ.+×zq bFRIENDLYb`á?Þ*X)CENTER*?ÜP?Þ*Y)CENTER*?ÜQ?Þ*SCALE¯*?ÜR?Pq4:7Rc ?Pp4:7Rc ?Rc?Qq3:1Rc ?Qp3:1c ?Rc?Ù?7